As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT 14TH STAGE DUCT OVERHEAT WARNING MESSAGE ON EICAS CLIMBING THROUGH 14,000. CLOSED LEFT 14TH STAGE VALVE AND OPENED ISOLATION VALVE IAW QRH PROCEDURES. FOUND 10TH STAGE LEAK SETTING OFF 14TH STAGE DUCT MESSAGE. REMOVED AND REPLACED 10TH STAGE GROUND AIR CONNECTION CHECK VALVE AND CLAMP IAW CRJ AMM 36-11-27. ALL OPS AND LEAK CHECKS GOOD IAW CRJ AMM 36-12-00.